I've never noticed those issues, and your link seems to say otherwise. But your post does read like the whinging of plumbers that I mentioned. You wouldn't happen to be, or be affiliated with, one, would you?
That's because the link is to the advocacy organization for flushless toilets. They don't deny it, and even mention it as cons! hah.
The links you're pointing to are to articles when the idea was 'hot'. And when all the press was going on around saving water in California (notably dead now, as is the norm).
If you didn't notice the issues, then congrats! someone in the maintenance team was doing the work so you didn't have to see what was happening.
I'm not a plumber, but I do own property and have installed (permitted/inspected) several toilets and had to do my own maintenance. Flushless was never worth the squeeze for me, but then I never had to deal with PR issues or fads. I was my own customer, and got to pick what worked for me and those around me.
https://www.12ft.io/https://www.wired.com/2010/06/ff-waterle...